Window screen



Aug. 4, 1936. v R. CRUICKSHANK 2,049,831

WINDOW SCREEN Fileq Oct. 5, 1954 {ELI/9,1

Patented Aug. 4, 1936 v UNITED STATES PATENT OFFICE WINDOW SCREEN 7 Roy Cruickshank, Alger, Mich. Application October 5, .1934, Serial No. 747,092

1 Claim.

This invention relates to window screens of the type adapted to be guided between the parting and bead strips of a window casing. Heretofore it has generally been the practice to use screens made up of slidably connected sections whereby the screens could be extended into the guide-ways provided for them.

An object of the present invention is to pro vide a one-piece frame the length of which is such as to permit the frame to be inserted between opposed guide-ways, said frame being equipped, at one end, with a slidable extension adapted automatically to seat itself in one of the guide-ways after the screen has been positioned, thereby to hold the screen against displacement.

A further object is to provide the screen with a slidable extension which is joined thereto in such a manner as not to become detached accidentally.

A further object is to provide simple means for shifting the extension automatically.

A still further object is to provide a screen the working parts of which are concealed within the extension.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

In the accompanying drawing the preferred form of the invention has been shown.

In said drawing Figure 1 is a front elevation of a screen equipped with the present improvements, a porposed guide-ways in a window casing with one end seated in one of the guide-ways.

Straddling one end of the frame is a channelled extension 2 extending throughout the height of the frame and lapping the sides of the adjacent end as shown in Figure 2. A stiff wire or rod 3 extends longitudinally within the extension along the central portion thereof where it is held by straps 4 pressed inwardly from the extension. The 'ends of this wire or rod are extended at right angles to the intermediate portion thereof to form guide arms 5. These arms are parallel and are slidable within open- 5 ings 6 extending through the adjacent end of frame I. The arms are slidable along the upper surface of the bottom rail of the frame I and the lower surface of the top rail of the frame and these arms are held to these rails by guide 10 staples I or the like. The free ends of the arms are bent or offset as at 8 to form stops whereby withdrawal of the arms from the staples is prevented. However, these ends are spaced from the staples a sufiicient distance to permit the channeled extension 2 to slide a limited distance upon the opposed faces of the frame.

A bow spring 9 or the like is seated in the channelled member or extension 2 between the arms 5 and bears at its ends against the channelled member and at an intermediate point against the frame I. Thus the extension 2 is held normally pressed laterally with the stop terminals 8 bearing against the adjacent staples or guides l. 7

A knob It or the like can be located on the extension 2 and by means thereof said extension can be pulled against the action of spring 9 so as to reduce the overall length of the screen. Thus the screen can be inserted into a window casing with one end seated in one guide-way. By then releasing the extension 2 its spring will slide it into the other guideway of the window casing so that the screen will thus be held properly seated where it will be securely held and can be slid upwardly and downwardly. The handling of the screen can be facilitated by means of a handle ll.

By providing the guide arms 5 with their stop terminals 8 the extension 2 is held against separation from the frame I so that the spring 9 is always properly housed and there is no danger of the parts becoming separated. It will be noted that it is not necessary to fasten the spring in. place because it is held against up and down movement by the arms 5 and against one end of the frame, straps struck into the channel from the wall thereof, a rod within and extending longitudinally of the channel in said extension and held by the straps, said rod having terminal arms cooperating with the straps to hold the rod against sliding in said channel and being slidable within the adjacent end of the frame close to the top and bottom of the frame, thereby to hold the extension assembled with the frame, guides on the top and bottom of the frame slidably engaged by the arms, a stop on each arm cooperating with the guides for limiting the sliding movement of the extension in one direction on the frame, a bow spring housed in the extension for urging the extension in said direction, said arms constituting means for holding the spring against longitudinal displacement in the channel in the extension, and means on the extension for use in shifting said extension, against the action of the spring to reduce the overall length of the screen. I r

ROY CRUICKSHANK. 

